1) A linear regression model for an instrument calibration based on four prepared standards (5 to 25 mM) produced the results provided in the table below. The instrument signal was in arbitrary units. Show your work. Slope standard uncertainty 0.062 0.002 Intercept standard uncertainty 0.10 0.03 Standard error of estimate 0.0254 Mean concentration of calibration standards 15.0 mM Sum of squared deviations about mean concentration of calibration standards (i.e. DEVSQ in excel) 250 mM2

Slope :I: standard uncertainty 0.062 :I: 0.002 Intercept :I: standard uncertainty 0.10 :I: 0.03 Standard error of estimate 0.0254 Mean concentration of calibration 151) mM standards Sum of squared deviations about mean 2 concentration of calibration standards 250 HIM i.e. DEVSQ in excel b Current a 0.0 C Voltage